﻿using System;
using System.Windows;
using System.Windows.Browser;

namespace ElencySolutions.ImageMap
{
    public partial class App : Application
    {

        public App()
        {
            Startup += Application_Startup;
            Exit += Application_Exit;
            UnhandledException += Application_UnhandledException;

            InitializeComponent();
        }

        public static string ImageFile { get; private set; }
        public static int ImageWidth { get; private set; }
        public static int ImageHeight { get; private set; }
        public static string ImageAltText { get; private set; }
        public static string XmlValueId { get; private set; }
        public static bool HotSpot { get; private set; }
        public static string InfoBoxId { get; private set; }
        public static string DefaultLinkUrl { get; private set; }

        private void Application_Startup(object sender, StartupEventArgs e)
        {
            RootVisual = new MainPage();

            ImageFile = string.Empty;
            ImageAltText = string.Empty;
            XmlValueId = string.Empty;
            InfoBoxId = string.Empty;
            DefaultLinkUrl = string.Empty;

            if (e.InitParams.ContainsKey("ImageUrl"))
                ImageFile = e.InitParams["ImageUrl"].Trim();

            if (e.InitParams.ContainsKey("Width"))
                ImageWidth = int.Parse(e.InitParams["Width"].Trim());

            if (e.InitParams.ContainsKey("Height"))
                ImageHeight = int.Parse(e.InitParams["Height"].Trim());

            if (e.InitParams.ContainsKey("Alt"))
                ImageAltText = e.InitParams["Alt"].Trim();

            if (e.InitParams.ContainsKey("XmlValueId"))
                XmlValueId = e.InitParams["XmlValueId"].Trim();

            if (e.InitParams.ContainsKey("Mode"))
                HotSpot = e.InitParams["Mode"].Trim() == "hotspot";

            if (e.InitParams.ContainsKey("InfoBoxId"))
                InfoBoxId = e.InitParams["InfoBoxId"].Trim();

            if (e.InitParams.ContainsKey("DefaultLinkUrl"))
                DefaultLinkUrl = e.InitParams["DefaultLinkUrl"].Trim();

            // Set up some scriptable managed types for access from Javascript.
            MainPage mainPage = new MainPage();
            HtmlPage.RegisterScriptableObject("mainPage", mainPage);
        }

        private void Application_Exit(object sender, EventArgs e)
        {

        }

        private void Application_UnhandledException(object sender, ApplicationUnhandledExceptionEventArgs e)
        {
            // If the app is running outside of the debugger then report the exception using
            // the browser's exception mechanism. On IE this will display it a yellow alert 
            // icon in the status bar and Firefox will display a script error.
            if (!System.Diagnostics.Debugger.IsAttached)
            {

                // NOTE: This will allow the application to continue running after an exception has been thrown
                // but not handled. 
                // For production applications this error handling should be replaced with something that will 
                // report the error to the website and stop the application.
                e.Handled = true;
                Deployment.Current.Dispatcher.BeginInvoke(delegate { ReportErrorToDOM(e); });
            }
        }

        private void ReportErrorToDOM(ApplicationUnhandledExceptionEventArgs e)
        {
            try
            {
                string errorMsg = e.ExceptionObject.Message + e.ExceptionObject.StackTrace;
                errorMsg = errorMsg.Replace('"', '\'').Replace("\r\n", @"\n");

                HtmlPage.Window.Eval("throw new Error(\"Unhandled Error in Silverlight Application " + errorMsg + "\");");
            }
            catch (Exception)
            {
            }
        }

    }
}
